:root {
    --primary-blue: #2c3e50;
    --accent-orange: #e67e22;
    --hover-orange: #d35400;
    --background-light: #ecf0f1;
    --text-dark: #2b2d42;
    --text-light: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', '微软雅黑', sans-serif;
}

body {
    background: linear-gradient(135deg, var(--primary-blue), #3498db);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.login-container {
    background-color: var(--background-light);
    padding: 2.5rem 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 100%;
    transform: translateY(-20px);
    animation: fadeIn 1.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-input {
    width: 100%;
    padding: 0.8rem 1.2rem;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
    border-color: var(--accent-orange);
    box-shadow: 0 0 5px rgba(230, 126, 34, 0.7);
    outline: none;
}

.password-container {
    position: relative;
}

.password-container .show-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    font-size: 1rem;
    color: #888;
    transition: color 0.3s ease;
}

.password-container .show-password:hover {
    color: var(--accent-orange);
}

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-dark);
    margin-top: 0.5rem;
}

.remember-forgot label {
    cursor: pointer;
}

.login-btn {
    width: 100%;
    padding: 0.8rem 1.2rem;
    font-size: 1rem;
    color: var(--text-light);
    background-color: var(--accent-orange);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.login-btn:hover {
    background-color: var(--hover-orange);
    transform: translateY(-3px);
}

.truck-animation {
    position: absolute;
    bottom: 10%;
    width: 60px;
    height: auto;
    opacity: 0.2;
    animation: moveTruck 20s linear infinite;
}

@keyframes moveTruck {
    0% {
        left: -150px;
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(5deg);
    }
    100% {
        left: 100%;
        transform: rotate(0deg);
    }
}